Rare chairs designed in 1955 by two great masters of Swiss design. A joint project by Willy Guhl and Robert Haussmann for the Rietberg Museum in Zurich. R. Haussmann was a student of Willy Guhl in the early 50's at the Kunstgewerbeschule in Zurich. Chairs in solid ash wood, black lacquered, seat covered with black leather. Published only a few years by the Dietiker factory in Stein am Rhein. Sold in series, we do not separate the set. Good original condition with some traces of wear. Production circa 1960.